package com.mymall.serve.config;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.ParserConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.nio.charset.Charset;

/**
 * 自定义序列化类，redis缓存用
 */
public class CustomFastJsonRedisSerializer<T> implements RedisSerializer<T> {
 
  public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
  private Class<T> clazz;
 
  public CustomFastJsonRedisSerializer(Class<T> clazz) {
    super();
    this.clazz = clazz;
  }

  /**
   *配置白名单 地址是实体类包地址
   */
  static {
    ParserConfig.getGlobalInstance().addAccept("com.mymall.serve.entity");
    ParserConfig.getGlobalInstance().addAccept("com.mymall.serve.pojo");
  }

    @Override
  public byte[] serialize(T t) throws SerializationException {
    if (null == t) {
      return new byte[0];
    }
    return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
  }
 
  @Override
  public T deserialize(byte[] bytes) throws SerializationException {
    if (null == bytes || bytes.length <= 0) {
      return null;
    }
    String str = new String(bytes, DEFAULT_CHARSET);
    return (T) JSON.parseObject(str, clazz);
  }
 
}